ISL83083EIBZ Equivalent & Substitute Parts

Part Overview

The ISL83083EIBZ is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by Renesas Electronics Corporation in 14-SOIC surface mount packaging. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The part operates across a 4.5V to 5.5V supply range with a 500kbps data rate and 20mV receiver hysteresis, designed for industrial communication applications requiring robust noise immunity.

Key Parameters

Parameter	ISL83083EIBZ
Manufacturer	Renesas Electronics Corporation
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Data Rate	500kbps
Voltage - Supply	4.5V ~ 5.5V
Receiver Hysteresis	20mV
Operating Temperature	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the ISL83083EIBZ is determined by strict alignment of the following critical parameters:

Primary Compatibility Criteria:

Protocol: RS422/RS485 full-duplex transceiver architecture
Configuration: 1/1 driver/receiver ratio
Package: 14-SOIC surface mount form factor
Duplex Mode: Full-duplex operation

Secondary Compatibility Criteria:

Data Rate: 500kbps minimum (higher rates are acceptable for backward compatibility)
Supply Voltage Range: Must encompass or overlap the 4.5V–5.5V requirement
Operating Temperature: Must support -40°C to 85°C minimum
Receiver Hysteresis: 100mV acceptable (higher hysteresis provides improved noise immunity)

The substitute parts are grouped into two functional categories based on data rate capability:

Category A - 500kbps Devices (Direct Rate Match): MAX3083 series variants (MAX3083CSD+, MAX3083ECSD+, MAX3083EESD+, MAX3083ESD+ and their Tape & Reel counterparts)

Category B - 16Mbps Devices (Enhanced Performance): MAX3079 series variants (MAX3079EASD+, MAX3079EESD+)

All substitute parts maintain ROHS3 compliance, 14-SOIC packaging, and surface mount mounting type.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Product Status	Packaging
ISL83083EIBZ	Renesas	RS422, RS485	1/1	500kbps	4.5V ~ 5.5V	-40°C ~ 85°C	20mV	Obsolete	14-SOIC
MAX3079EASD+	Analog Devices/Maxim	RS422, RS485	1/1	16Mbps	3V ~ 3.6V	-40°C ~ 125°C	100mV	Active	14-SOIC
MAX3079EESD+	Analog Devices/Maxim	RS422, RS485	1/1	16Mbps	3V ~ 3.6V	-40°C ~ 85°C	100mV	Active	14-SOIC
MAX3083CSD+	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	0°C ~ 70°C	100mV	Active	14-SOIC
MAX3083CSD+T	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	0°C ~ 70°C	100mV	Active	14-SOIC
MAX3083ECSD+	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	0°C ~ 70°C	100mV	Active	14-SOIC
MAX3083ECSD+T	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	0°C ~ 70°C	100mV	Active	14-SOIC
MAX3083EESD+	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	-40°C ~ 85°C	100mV	Active	14-SOIC
MAX3083EESD+T	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	-40°C ~ 85°C	100mV	Active	14-SOIC
MAX3083ESD+	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	-40°C ~ 85°C	100mV	Active	14-SOIC
MAX3083ESD+T	Analog Devices/Maxim	RS422, RS485	1/1	500kbps	4.75V ~ 5.25V	-40°C ~ 85°C	100mV	Active	14-SOIC

Engineering Selection Recommendations

For Direct Rate-Matched Substitution (500kbps):

The MAX3083 series provides the closest functional equivalence to the ISL83083EIBZ. Among MAX3083 variants, MAX3083EESD+ and MAX3083EESD+T are preferred for applications requiring the full -40°C to 85°C operating temperature range, matching the original part's thermal specification. These variants are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), providing superior long-term supply assurance compared to the obsolete ISL83083EIBZ.

The supply voltage range of MAX3083 devices (4.75V–5.25V) is narrower than the ISL83083EIBZ (4.5V–5.5V). Applications operating at the lower voltage boundary (below 4.75V) require circuit-level voltage regulation or alternative selection.

For Enhanced Performance Applications (16Mbps Capable):

The MAX3079EESD+ offers superior data rate capability (16Mbps) and extended temperature range (-40°C to 125°C) with active product status. However, its supply voltage range (3V–3.6V) is incompatible with 5V systems without additional voltage conversion circuitry. This variant is suitable only for 3.3V or lower supply voltage designs.

Packaging Considerations:

Tube packaging (standard suffix) and Tape & Reel packaging (T suffix) variants are functionally identical. Selection depends on procurement volume and assembly automation requirements. Tape & Reel variants are standard for high-volume production; Tube packaging is typical for lower volumes and manual assembly.

Compliance and Supply Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original ISL83083EIBZ. Active product status of all MAX3083 and MAX3079 variants ensures continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can MAX3083 devices directly replace ISL83083EIBZ without circuit modifications?

A: MAX3083 devices are pin-compatible and functionally equivalent for RS422/RS485 communication at 500kbps. However, the narrower supply voltage range (4.75V–5.25V vs. 4.5V–5.5V) requires verification that your circuit operates within this window. If your design uses 4.5V–4.74V or 5.26V–5.5V, additional voltage regulation is necessary.

Q: What is the difference between MAX3083EESD+ and MAX3083ESD+?

A: Both variants are functionally identical with identical electrical specifications. The designation difference reflects internal die or manufacturing process variations that do not affect performance or compatibility. Selection between them is based on inventory availability and packaging preference (Tube vs. Tape & Reel).

Q: Why does the ISL83083EIBZ show 20mV receiver hysteresis while MAX3083 shows 100mV?

A: Higher receiver hysteresis (100mV) provides improved noise immunity in electrically noisy environments by increasing the voltage differential required to trigger state transitions. This is a performance enhancement, not a limitation. Applications designed for 20mV hysteresis will function correctly with 100mV hysteresis.

Q: Is MAX3079EESD+ suitable for 5V systems?

A: No. MAX3079EESD+ operates on 3V–3.6V supply voltage and is not compatible with 5V systems. Use MAX3083 series variants for 5V applications. MAX3079 is appropriate only for 3.3V or lower supply voltage designs.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging contains loose components in a plastic tube, suitable for manual assembly and lower-volume orders. Tape & Reel packaging (T suffix) provides components on continuous carrier tape for automated pick-and-place assembly equipment. Electrical and functional specifications are identical; packaging selection depends on assembly process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (MAX3079 and MAX3083 series) are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the ISL83083EIBZ.

Q: Which substitute part has the best long-term availability?

A: MAX3083EESD+ and MAX3083EESD+T are recommended for long-term availability assurance. These variants are active products from Analog Devices/Maxim Integrated with high inventory levels (2,440 and 4,899 units respectively) and unlimited moisture sensitivity rating, indicating mature production status and sustained manufacturing commitment.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message